Choose the correct pair.

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(A) In $Metaphase-II$,the chromosomes align at the equatorial plate,and the centromeres of all chromosomes are arranged on the equatorial plane of the

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Metaphase-$II$: The centromeres of all chromosomes are arranged on the equatorial plate.

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(A) In $Metaphase-II$,the chromosomes align at the equatorial plate,and the centromeres of all chromosomes are arranged on the equatorial plane of the cell. This is the characteristic feature of $Metaphase-II$ where each chromosome is attached to spindle fibers from opposite poles. Option $A$ correctly describes this alignment. $Metaphase-I$ involves the alignment of homologous pairs,not just centromeres on one surface. $Anaphase-I$ involves the separation of homologous chromosomes,and the nucleus is not reformed until the end of $Telophase$.

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